hi everyone, recently bought 525d estate e61 55 reg(11/2005)
within two weeks both keys stopped opening or shutting car, but it still run the ignition once i stick the key and pressing engine start button.
for some reason central locking is working manually via driver door (there is little emergency key hidden inside main key) but when im open the door alarm goes off really loud untill ill put main key into ignition hole. my first thought was that the key battareys are flat, but aint no battareys in them as keys are rechargarge from ignition every time engine runs.it might be a button inside of car that deactivate remote keys central locking/unlocking,but im not shure there is any at all.manyal doesnt say nothing about it.
anyone please can help with my issue?thank u guys

 

There's a locking module under the roof in the back of your car, and it's probably filled with moisture. That's pretty common on the E61 model. I've heard of the exact same problem with a 535dA T in Sweden, and that was caused by moisture and two cables that was damaged in the tailgate.

 

thank u for a reply.is that something i can solve it myself or i have to take my car to serviceman?

 

I had a similar problem and the module shown below (4) was bad, the part is around $150. They probably have a similar part in the touring. Have you noticed your FM radio has bad reception? Both receivers are in the same module (this module actually doesn't contain the FM receiver but the FM amplifier).

 

hiya, thanx for a reply. havent noticed bad FM reception actually, i spoke to serviceman over the prone, he told me it might me one of those two modules (front or back) or both keys are bad.firs need to do checking whole system via they computer wich is 65 GBP (APROX 100 USD). im trying to find out is that fault covered by my warranty, but ive got an entry level of it. pain in the arse for 3 years old car in good condition. espetially after two weeks after u bought it